Embroidery attachment for sewing-machines.



H. RICHTER.

EMBROIDERY ATTACHMENT FOR SEWING MACHINES.

' APPLICATION FILED JUNE 14, 1909.

994,033,, Patented May 30, 1911.

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I H. RICHTER. EMBROIDERY ATTACHMENT FOR SEWING MAGHINES.

APPLIOAT-ION FILED 1111111 14, 1909.

994,033., Patented May 30, 1911.,

3 SHEETS-SHEET 2.

H. RICHTER.

EMBROIDERY ATTACHMENT FOE SEWING MACHINES.

APPLICATION FILED JUNE 14, 1909.

994,033. Patented May 30, 1911.

3 SHEETS-SHEET 3.

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UNTTEEE %TATE% PATENT @FFTQE I-IERMANN RICHTER, 01? DENVER, COLORADO.

EMBROIDERY ATTACHMENT FOR SEWING-MACHINES.

T 0 all whom it may concern:

Be it known that I, HERMANN RICHTER, a subject of Germany, residing inthe city and county of Denver and State of Colorado, have inventedcertain new and useful Improvements in Embroidery Attachments forSewing-Machines; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

My invention relates to an attachment for sewing machines, adapted tomanipulate a holder for embroidery goods or the fabric upon which theembroidery work is to be done.

My improved device when in use is attached to the table of a sewingmachine or other suitable support and the needle of the machineoperating in the ordinary way performs the embroidery function, theholder being moved horizontally while the needle operates in the regularway.

My improved device operates somewhat upon the principle of a pantographand is so constructed that the work holder may be adj ustably attachedto one arm thereof. The construction is also such that when themanipulating arm is moved over the design to be copied, a correspondingmovement is imparted to the work holder. Furthermore, my improvedconstruction in its entirety embraces bars arranged in the form of anumber of parallelograms. One arm of the de vice is stationary, beingthat secured to the table of the sewing machine. To another arm the workholder is attached while the manipulating arm which has a pointer whichthe operator moves over the design to be copied, forms an extension ofone of the arms of a parallelogram. As the pointer of this manipulatingarm is moved over the design a correspondiiw movement is imparted to thework holder but of a less degree, the object being to reproduce acomparatively large design on a small scale by the use of a sewingmachine needle which is arranged to act upon the work within the workholder. The latter may be of any suitable construction as the usualwooden hoops,

Specification of Letters Patent.

Application filed June 14, 1909.

Patented May 36 1911.

Serial No. 502,185.

one located within the other, the work being held between them.

As nothing is claimed in this application upon any particularconstruction of work holder, I have shown a conventional form only.

An important feature of 'my present invention consists of a pin formingthe support for the manipulating arm, the latter being verticallyadjustable upon the arm, whereby the latter may be raised or loweredwith reference to the pointer carried by the arm and which is moved overthe original design which is to be reproduced but on a different scale,by the sewing machine needle. This riding pin may have a bearing ball atits extremity to facilitate its movement over the surface of the tableor other support to which the device is attached. By the use of thissupporting or riding pin the pointer may be raised to a plane just abovethe surface upon which the design is formed. In this way the operatorhas the full advantage of the pointers function without the necessity ofholding the manipulating arm at a sufficient distance above the surface,to allow the pointer to just clear the design.

It sometimes happens that it is desirable to enlarge a small design. Inthis event the small design is placed upon the work holder under thesewing machine needle, the latter being inactive, and held in the raisedposition. In this event the manipulating arm is equipped with a pencilwhose point is so adjusted that it rests upon the paper or fabric uponwhich the enlarged design is to be formed. The instrument is thenoperated by the use of the manipulating arm to cause the outlines of thesmall design to pass under the sewing machine needle, and during thisoperation the point of the pencil will form the same design upon arelatively large scale. The large design, however, will not be veryaccurate but will be suificient for the operators purpose, since theirregularities may be readily corrected.

Another feature of my improved construction consists in equipping anumber of the bars of the device with supporting pins adapted to engagethe upper surface of the table or other support with which the device isconnected. This facilitates the work since when the device, or the armsthereof, are positively supported, the operator is not obliged toexercise any care in regard to this feature and can give his entireattention to the proper manipulation of the arm whereby the pointer maybe caused to accurately follow the outlines of the design to bereproduced.

Having briefiy outlined my improved construction I will proceed todescribe the same in detail, reference being made to the accompanyingdrawing in which is illustrated an embodiment thereof.

Figure 1 is a top plan view of my im proved instrument shown attached tothe table of a sewing machine, the arm with which the head of themachine is provided being indicated by dotted lines. Fig. 2 is afragmentary perspective view of the device shown in connection with theneedle of the sewing machine and the work holder. Fig. 3 is a detailview showing a portion of the manipulating arm with its support, thetracing pointer also being illustrated. Fig. 4 is a section taken on theline 44. Fig. 5 is a top plan view of the construct-ion shown in Fig. 3,a view looking in the direction of arrow 5, Fig. 3. Fig. 6 is a sectiontaken on the line 66, Fig. 5. Fig. 7 is a sect-ion taken on the line7-7, Fig. 1, the parts being shown on a larger scale. Fig. 8 is a topplan view illustrating a number of my improved pantographic instrumentsoperated by a single arm, each pantograph being connected with a workholder shown in operative relation with the head of asewing machine.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the table of a sewing machine and 6 the armwith which the head of the machine is equipped. To the table 5 isattached a frame 7 in. such a manner that it is made stationary. Asshown in the drawing, it is secured by fastening screws 3. This frame isstationary and to it is attached and also made stationary, an

' arm 9, to which one extremity of an arm 10 is pivotally attached asshown at 12. The opposite extremity of the arm 10 is pivoted as shown at13 to one extremity of a short arm 14 pivotally connected as shown at 15with a plate 16 whose opposite extremities are pivotally connected asshown at 17 and 18, with two arms 19 and 20. These arms are alsopivotally connected as shown at 21 and 22 with an arm 23, to which thework holder 24 is secured by means of a fastening screw 25, which passesthrough an open ng formed in the arm 23, and a registerlng openingformed in a lug or ear 26 rigidly connected with the work holder. Theframe 23 is provided with a series of orlfices 27, whereby the workholder may be ad usted upon the arm 23 as convemence may require. Itwill thus be observed that the plate 16, together with the arms 19, and23, forms a parallelogram. The arm 19 also forms a member of aparallelogram whose other members consist of parts 28, 29 and 30; Thepart 29 has an extension 31 extending beyond the pivot screw 17 whichpasses through one extremity of the part 29 as well as through the plate16 and the arm 19. The extension 31 is pivotally connected as shown at32, with the stationary arm 9. The opposite extremity of the part 29 ispivotally connected as shown at 33, with one extremity of the part 30whose opposite extremity is pivoted at 34 to one end of arm 28. Thepivot screw 21 connecting the arms 19 and 23 also forms the pivot forone end of the arm 28.

The parallelogram member 30 is simply a part of the manipulating arm 35,one end of which is provided with a handle 36, which the operator graspswhen actuating the device. This manipulating arm is also provided with apointer 37 whose extremity follows the outlines of the design to becopied. In the present instance the letter R is illustrated and issupposed to be formed upon a piece of fabric 38 which is secured to thetable 5 in any convenient manner. This manipulating arm may be supportedby a pin 39 passing through an opening formed in the manipulating armand also through a sleeve 40 with which the arm is provided. The pin islocked in any desired position of adjustment within the sleeve 40, by ascrew 41. The lower extremity of this pin as shown in the drawing isequipped wit-h a ball bearing 42 to facilitate its movement over thesurface upon which the design is mounted.

Applied to the manipulating arm in the vicinity of the pin 39, is aplate 43. As shown in the drawing this plate is secured to the arm by ascrew 44. One extremity of the plate is slotted as shown at 45, tostraddle the upper bent extremity of the pointer 37. The extremity ofthe plate 43 opposite the slot 45 is provided with an opening. Belowthis opening the plate is equipped with a sleeve 46, a pencil 47 beingpassed through the opening and the sleeve and held in the desiredposition of vertical adjust ment by said screw 48.

In case it is desired to re-produce a small design upon a larger scale,the pencil 47 is so adjusted that it will engage a surface upon whichthe larger design is to be formed. The small design is then placed underthe sewing machine needle, the latter being raised from the fabriccarrying the design. Then by means of the manipulating arm, theinstrument is actuated to cause the outlines of the small design to passin succession under the point of the sewing machine needle, and duringthis operation the point of the pencil 47 will reproduce the smalldesign on a larger scale, but with more or less irregularity. Thegeneral outlines, however, will be correct. The large design maythen beused for reproducing small embroidered designs, by the operation of theneedle, the fabric being shifted in the well known manner.

In order to support the manipulating arm 35, as well as the part 29,bearings 49 may be applied to the under surface of the bar and screwedin place by rivet pins 50. (See Fig. 7.) In this case a sleeve 51extends below the arm 29, the rivet pin 50 being inserted in the sleevefrom above and through an opening formed in the arm. A ball bearing 52is inserted in the lower extremity of the sleeve and is adapted toengage the surface above which the movable parts of the device aresupported.

\Vhen the device is in use, the fabric A upon which the design is to bereproduced, is applied to a holder 24: of any suitable construction.This work holder is then connected with the arm 23 of the instrument andthe fabric upon which the design is to be re-produced is brought underthe sewing machine needle. Then as the machine is operated, the workholder is manipulated by operating the arm 35, so that the pointer 37shall follow the outlines of the relatively large design to bereproduced, during which operation the said design will be reproduced ona smaller scale in embroidcry form by the sewing machine needle carryingthread or silk of any desired color or character. In order to preventthe pointer from sticking in the fabric carrying the design, thesupporting pin 39 is so adjusted that it engages the surface of thefabric, whereby the extremity of the pointer is supported just above thedesign.

If it is desired to reverse the operation or re-produce a small designupon a larger scale, the fabric containing the small design is appliedto the work holder, the latter being connected with the instrument inthe manner heretofore explained. The pencil -17 is then so adjusted thatits point will engage the surface of the fabric upon which the largerdesign is to be formed, the pointer 37 being, of course, raised abovethe surface of the fabric. The instrument is then so manipulated thatthe outlines of the small design are caused to pass under the point ofthe sewing machine needle, during which time the pencil carried by theplate 43 mounted upon the manipulating arm, will reproduce the smalldesign on a relatively large scale, but with comparatively irregularoutlines, as heretofore explained.

hen the instrument is used for reproducing a large design on arelatively small scale in embroidery form by a sewing machine, thepencil 47 is not employed, in which event it is vertically adjusted tomaintain its point above the level of the surface upon which theinstrument is mounted.

If desired, a number of the instruments may be operated from a single,relatively long manipulating arm 35. (See Fig. 8.)

In order to stiffen the arm 35 and insure that all the instruments maybe operated in harmony or synchronism, arms 53 are applied to the arm35. Each of these arms has a member 54 extending at right angles to thebody of the arm. The two extreme members 54 are connected by a rod 55,which rests intermediate its extremities upon the intermediate arm orarms 54. This makes a structure sufficiently rigid to make itpracticable to operate a series of instruments in synchronism by the useof a single main manipulating arm 35. As shown in Fig. 8, three sewingmachine heads 6 are illustrated, all of them being connected to beoperated by a sprocket chain 56. Since the operation of a number of theinstruments is precisely the same as that of a single instrument,further explanation is not thought necessary.

In order to strengthen the instrument and limit, as far as may be, thepossible lost motion within the various joints of the apparatus, I equipthe latter with an arm 57, which is pivotally connected with the plate16, as shown at 58 and with the rigid bar 9 as shown at 59.

Having thus described my invention, what I claim is:

1. The combination with a work holder, of a pantographic instrument towhich the work holder is secured, the said instrument having amanipulating arm, a sleeve mounted on the arm, which is perforated toregister with the opening in the sleeve, a pointer also mounted on thearm the said pointer having an upward bend above the arm and a markermounted on the opposite side of the arm from the pointer and verticallyadjustable for the purpose set forth.

2. The combination with a work holder, of a pantographic instrument towhich the work holder is secured, the said instrument having amanipulating arm, a pointer attached to the arm, and having a bendformed therein and extending above the surface of the arm, a plateapplied to the arm and extending crosswise thereof, the said plateprojecting beyond the arm on both sides, one projecting extremity beingslotted to straddle the bend of the pointer, while the other extremityis perforated and provided with a sleeve, a marker inserted in saidperforation and passing through the sleeve, the said marker beingvertically adjustable for the purpose set forth.

3. The combination with a work holder, of a pantographic instrument towhich the work holder is secured, the said instrument having amanipulating arm, a pointer mounted on the arm, the polnter havmg anupward bend above the arm, a sleeve mount- In testimony whereof I aflixmy signature in presence of two wltnesses.

. HERMANN RICHTER. ed on the opposlte slde of the arm from the pointer,and a marker inserted in the sleeve Witnesses: and vertically adjustablefor the purpose A. J. OBRIEN. set forth.

JESSIE F. HOBART.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

